1.Veterinary management protocol for non-human primates: quarantine, anesthesia, and postoperative care for mastoidectomy at animal research institutions
Yoon Beom LEE ; Woori JO ; Eui-Suk JEONG ; Tae Ku KANG ; Gwang-Hoon LEE
Korean Journal of Veterinary Research 2023;63(4):e35-
Non-human primate (NHP) research faces challenges due to zoonosis risk and complex veterinary management yet lacks standardized guidelines for animal care. Therefore, we developed an advanced veterinary management protocol for NHP quarantine, anesthesia, and postoperative care. Three female 4 to 5-year-old cynomolgus monkeys were anesthetized and underwent various tests, including body weight, temperature, blood tests, urinalysis, microbiological monitoring, and physical and dental examinations. Ivermectin and medicated baths were administered to eradicate ectoparasites and endoparasites, and testing was repeated 30 days later. Following quarantine, we performed computed tomography and anesthesia maintenance for mastoidectomy. To relieve pain and maintain body weight, we administered tramadol intramuscularly 4 times/day for 3 days and meloxicam subcutaneously twice daily for 14 days. Feed replacements were provided. During the 33-day quarantine period, physical examinations revealed no abnormalities indicative of infectious diseases, and no specific clinical symptoms were observed. Through a preliminary test of anesthesia time, we selected ketamine 4 mg/kg + medetomidine 50 µg/kg for short experiments such as computed tomography, and ketamine 8 mg/kg + medetomidine 50 µg/kg for intubation. Ten days after mastoidectomy, NHPs consumed 100 kcal/kg and recovered their body weight. This study offers advanced veterinary management guideline for NHP research. Such protocols can lead to more standardized and ethical practices in NHP research, thereby enhancing the quality of studies on NHPs and the translation of findings to human health and disease.
2.Regular medical checkup program (in K‑MEDI hub) to enhance the welfare of laboratory dogs and pigs
Gwang‑Hoon LEE ; Woori JO ; Joon‑Suk PARK ; Tae‑Ku KANG ; Soo‑Eun SUNG ; Taeho OH ; KilSoo KIM
Laboratory Animal Research 2023;39(4):298-307
Background:
The importance of animal welfare is being recognized worldwide. Recently, the increasing demand for enhanced laboratory animal welfare has led to clinically featured transformations of animal research institutes. This study aims to describe the process and findings of veterinary medical check-ups and its influence on laboratory dogs and pigs welfare. Regular medical checkups were conducted by the attending veterinarian twice a year to ensure the health and welfare of dogs and pigs in our animal research institute. Based on the findings from the medi‑ cal checkup, we assessed the current health of dogs and pigs,providing reasonable treatments to prevent the risk of complications.
Results:
Blood tests and physical examinations revealed clinically relevant findings. Some of these findings were due to insufficient postoperative care after invasive surgical experiments and the remaining were predictable side effects after surgical experiments. However, one finding involved severe gum bleeding due to retained deciduous teeth.This animal was euthanized because it was judged to reach the humane endpoint. Majority of the dogs and pigs at our animal research institute were considered to be healthy, based on the comprehensive results of the medical checkups.
Conclusions
Regular medical checkups by the attending veterinarian established enhanced animal welfare, ensur‑ ing the accuracy and reproducibility of animal studies. This pioneering veterinary animal care program can serve as a potential advanced guideline for animal research institutes to improve dogs and pigs welfare.
3.Differences in Clinical Characteristics of Invasive Tracheobronchial Aspergillosis according to the Presence of Invasive Pulmonary Aspergillosis
Chuiyong PAK ; Woori JO ; Jin Hyoung KIM ; Jae Uk IM ; Joseph JEONG ; Hee Jeong CHA ; Eun-Young CHOI ; Seung Won RA
Tuberculosis and Respiratory Diseases 2021;84(4):326-332
Background:
The association of invasive tracheobronchial aspergillosis (ITBA) with invasive pulmonary aspergillosis (IPA) is not well established. We aimed to compare clinical characteristics between patients who exhibited ITBA with IPA and those who exhibited isolated ITBA (iITBA). Additionally, the usefulness of serum or bronchial galactomannan (GM) tests in diagnosing ITBA was evaluated.
Methods:
This retrospective single-center case-control study was conducted over a period of 4 years. Fifteen patients were enrolled after confirming the presence of ITBA using bronchoscopy-guided biopsy (iITBA, 7 vs. ITBA+IPA, 8). Clinical characteristics of patients and results obtained from serum or bronchial GM tests were compared between the two groups. Mortality was assessed using data collected from a 6-month follow-up period.
Results:
The ITBA+IPA group showed a higher prevalence of hematologic malignancy (75% vs. 14%, p=0.029), a greater number of patients with multiple bronchial ulcers (75% vs. 14%, p=0.029), lower platelet counts (63,000/μL vs. 229,000/μL, p<0.001), and a mortality rate which was significantly higher (63% vs. 0%, p=0.026) than the iITBA group. In the ITBA+IPA group, 57% of patients tested positive according to the serum GM assay, whereas in the iITBA group, all patients tested negative (p=0.070). The bronchial GM level was high in both groups, but there was no significant difference between them.
Conclusion
Patients with ITBA+IPA had a greater number of hematologic malignancies with lower platelet counts and a poorer prognosis than patients diagnosed with iITBA. Findings obtained from bronchoscopy and bronchial GM tests were more useful in diagnosing ITBA than the serum GM test results.
4.Differences in Clinical Characteristics of Invasive Tracheobronchial Aspergillosis according to the Presence of Invasive Pulmonary Aspergillosis
Chuiyong PAK ; Woori JO ; Jin Hyoung KIM ; Jae Uk IM ; Joseph JEONG ; Hee Jeong CHA ; Eun-Young CHOI ; Seung Won RA
Tuberculosis and Respiratory Diseases 2021;84(4):326-332
Background:
The association of invasive tracheobronchial aspergillosis (ITBA) with invasive pulmonary aspergillosis (IPA) is not well established. We aimed to compare clinical characteristics between patients who exhibited ITBA with IPA and those who exhibited isolated ITBA (iITBA). Additionally, the usefulness of serum or bronchial galactomannan (GM) tests in diagnosing ITBA was evaluated.
Methods:
This retrospective single-center case-control study was conducted over a period of 4 years. Fifteen patients were enrolled after confirming the presence of ITBA using bronchoscopy-guided biopsy (iITBA, 7 vs. ITBA+IPA, 8). Clinical characteristics of patients and results obtained from serum or bronchial GM tests were compared between the two groups. Mortality was assessed using data collected from a 6-month follow-up period.
Results:
The ITBA+IPA group showed a higher prevalence of hematologic malignancy (75% vs. 14%, p=0.029), a greater number of patients with multiple bronchial ulcers (75% vs. 14%, p=0.029), lower platelet counts (63,000/μL vs. 229,000/μL, p<0.001), and a mortality rate which was significantly higher (63% vs. 0%, p=0.026) than the iITBA group. In the ITBA+IPA group, 57% of patients tested positive according to the serum GM assay, whereas in the iITBA group, all patients tested negative (p=0.070). The bronchial GM level was high in both groups, but there was no significant difference between them.
Conclusion
Patients with ITBA+IPA had a greater number of hematologic malignancies with lower platelet counts and a poorer prognosis than patients diagnosed with iITBA. Findings obtained from bronchoscopy and bronchial GM tests were more useful in diagnosing ITBA than the serum GM test results.
6.Diastolic dysfunction and acute kidney injury in elderly patients with femoral neck fracture
Woori CHO ; Tae Yeon HWANG ; Yoon Kyung CHOI ; Ji Hyun YANG ; Myung Gyu KIM ; Sang Kyung JO ; Won Yong CHO ; Se Won OH
Kidney Research and Clinical Practice 2019;38(1):33-41
BACKGROUND: Femoral neck fracture is common in the elderly population. Acute kidney injury (AKI) is an important risk factor for mortality in patients who have had such fracture. We evaluated the incidence of AKI in patients who had femoral neck fracture and identified risk factors for AKI and mortality. METHODS: This was an observational cohort study including 285 patients who were ≥ 65 years of age and who underwent femoral neck fracture surgery between 2013 and 2017. RESULTS: The mean age was 78.63 ± 6.75 years. A total of 67 (23.5%) patients developed AKI during the hospital stay: 57 (85.1%), 5 (7.5%), and 5 (7.5%) patients were classified as having stage 1, 2, and 3 AKI, respectively. Patients with AKI had a lower baseline estimated glomerular filtration rate and higher left atrial dimension, left ventricular mass index, pulmonary artery pressure, and the ratio of early mitral inflow velocity to early diastolic mitral annulus velocity (E/e’) and were more likely to have diabetes or hypertension (HTN) (P < 0.05). The presence of HTN (odds ratio [OR], 4.570; 95% confidence interval [CI], 1.632–12.797) higher E/e’ (OR, 1.105; 95% CI, 1.019–1.198), and lower hemoglobin (OR, 0.704; 95% CI, 0.528–0.938) were independently associated with a higher risk for developing AKI. Severe AKI (OR, 24.743; 95% CI, 2.822–212.401) was associated with a higher risk of mortality. CONCLUSION: Elderly patients with femoral neck fracture had a high incidence of AKI. Diastolic dysfunction was associated with AKI. Severe AKI was associated with in-hospital mortality.
Acute Kidney Injury
;
Aged
;
Cohort Studies
;
Femoral Neck Fractures
;
Femur Neck
;
Glomerular Filtration Rate
;
Heart Failure, Diastolic
;
Hospital Mortality
;
Humans
;
Hypertension
;
Incidence
;
Length of Stay
;
Mortality
;
Pulmonary Artery
;
Risk Factors
7.A Case of Pseudohypoparathyroidism Type Ib Caused by Aberrant Methylation in the GNAS Complex Locus.
Sung Jin JO ; Eunhee HAN ; Woori JANG ; Hyojin CHAE ; Yonggoo KIM ; Gun Dong LEE ; Won Kyoung CHO ; Byung Kyu SUH ; Myungshin KIM
Laboratory Medicine Online 2017;7(2):83-87
Pseudohypoparathyroidism (PHP) is a rare disorder caused by genetic and epigenetic aberrations in the GNAS complex locus resulting in impaired expression of stimulatory G protein (Gsα). PHP type Ib (PHP-Ib) is characterized by hypocalcemia and hyperphosphatemia due to renal resistance to the parathyroid hormone, and is distinguished from PHP-Ia by the absence of osteodystrophic features. An 11-yr-old boy presented with poor oral intake and cramping lower limb pain after physical activity. Laboratory studies revealed hypocalcemia, hyperphosphatemia, and increased parathyroid hormone levels. The GNAS complex locus was evaluated using the methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) assay. Gain of methylation in the NESP55 domain and loss of methylation in the antisense (AS) transcript, XL, and A/B domains in the maternal allele were observed. Consequently, we present a case of PHP-Ib diagnosed using MS-MLPA.
Alleles
;
Epigenomics
;
GTP-Binding Proteins
;
Humans
;
Hyperphosphatemia
;
Hypocalcemia
;
Lower Extremity
;
Male
;
Methylation*
;
Motor Activity
;
Multiplex Polymerase Chain Reaction
;
Muscle Cramp
;
Parathyroid Hormone
;
Pseudohypoparathyroidism*
10.Genetic–pathologic characterization of myeloproliferative neoplasms.
Yonggoo KIM ; Joonhong PARK ; Irene JO ; Gun Dong LEE ; Jiyeon KIM ; Ahlm KWON ; Hayoung CHOI ; Woori JANG ; Hyojin CHAE ; Kyungja HAN ; Ki Seong EOM ; Byung Sik CHO ; Sung Eun LEE ; Jinyoung YANG ; Seung Hwan SHIN ; Hyunjung KIM ; Yoon Ho KO ; Haeil PARK ; Jong Youl JIN ; Seungok LEE ; Dong Wook JEKARL ; Seung Ah YAHNG ; Myungshin KIM
Experimental & Molecular Medicine 2016;48(7):e247-
Myeloproliferative neoplasms (MPNs) are clonal hematopoietic stem cell disorders characterized by the proliferation of one or more myeloid lineages. The current study demonstrates that three driver mutations were detected in 82.6% of 407 MPNs with a mutation distribution of JAK2 in 275 (67.6%), CALR in 55 (13.5%) and MPL in 6 (1.5%). The mutations were mutually exclusive in principle except in one patient with both CALR and MPL mutations. The driver mutation directed the pathologic features of MPNs, including lineage hyperplasia, laboratory findings and clinical presentation. JAK2-mutated MPN showed erythroid, granulocytic and/or megakaryocytic hyperplasia whereas CALR- and MPL-mutated MPNs displayed granulocytic and/or megakaryocytic hyperplasia. The lineage hyperplasia was closely associated with a higher mutant allele burden and peripheral cytosis. These findings corroborated that the lineage hyperplasia consisted of clonal proliferation of each hematopoietic lineage acquiring driver mutations. Our study has also demonstrated that bone marrow (BM) fibrosis was associated with disease progression. Patients with overt fibrosis (grade ⩾2) presented an increased mutant allele burden (P<0.001), an increase in chromosomal abnormalities (P<0.001) and a poor prognosis (P<0.001). Moreover, among patients with overt fibrosis, all patients with wild-type JAK2/CALR/MPL (triple-negative) showed genomic alterations by genome-wide microarray study and revealed the poorest overall survival, followed by JAK2-mutated MPNs. The genetic–pathologic characteristics provided the information for understanding disease pathogenesis and the progression of MPNs. The prognostic significance of the driver mutation and BM fibrosis suggests the necessity of a prospective therapeutic strategy to improve the clinical outcome.
Alleles
;
Bone Marrow
;
Chromosome Aberrations
;
Disease Progression
;
Fibrosis
;
Hematopoietic Stem Cells
;
Humans
;
Hyperplasia
;
Prognosis
;
Prospective Studies

Result Analysis
Print
Save
E-mail